frFR

frFR is a locale identifier used in software and localization to indicate the French language as it is used in France. In practice it appears in several forms, including the IETF language tag fr-FR, the common Windows/Unix style fr_FR, and sometimes the compact shorthand frFR in codebases. The canonical form per BCP 47 is fr-FR. The code combines the language code fr (ISO 639-1) with the country code FR (ISO 3166-1 alpha-2), signaling that translations, formatting, and cultural conventions should reflect metropolitan France.

Cultural conventions associated with this locale include date formatting, number formatting, and currency display. Dates are typically written in day-month-year order (dd/mm/yyyy) and the 24-hour clock is common in many contexts. Numbers use a comma as the decimal separator and a space as the thousands separator. Monetary values follow European conventions, with the euro symbol (€) placed after the amount and often preceded by a non-breaking space, for example 1 234,56 €. Spelling and vocabulary generally align with standard French used in France, though regional terms may appear in certain contexts.

Applications and scope: The fr-FR locale is used to localize user interfaces, help texts, and content, and to apply France-specific formatting and sorting rules. It is one of several French regional variants (such as fr-CA, fr-BE, fr-CH), which may coexist in a single application or system. When precise regional French variants are required, developers should rely on explicit locale tags rather than a generic fr.